Evaluation of the CO 2 sequestration capacity for coal fly ash using a flow-through column reactor under ambient conditions

Ho Young Jo, Joon Hoon Ahn, Hwanju Jo

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

An in-situ CO 2 sequestration method using coal ash ponds located in coastal regions is proposed. The CO 2 sequestration capacity of coal fly ash (CFA) by mineral carbonation was evaluated in a flow-through column reactor under various conditions (solid dosage: 100-330g/L, CO 2 flow rate: 20-80mL/min, solvent type: deionized (DI) water, 1M NH 4Cl solution, and seawater). The CO 2 sequestration tests were conducted on CFA slurries using flow-through column reactors to simulate more realistic flow-through conditions. The CO 2 sequestration capacity increased when the solid dosage was increased, whereas it was affected insignificantly by the CO 2 flow rate. A 1M NH 4Cl solution was the most effective solvent, but it was not significantly different from DI water or seawater. The CO 2 sequestration capacity of CFA under the flow-through conditions was approximately 0.019g CO 2/g CFA under the test conditions (solid dosage: 333g/L, CO 2 flow rate: 40mL/min, and solvent: seawater).

Original languageEnglish
Pages (from-to)127-136
Number of pages10
JournalJournal of Hazardous Materials
Volume241-242
DOIs
Publication statusPublished - 2012 Nov 30

Fingerprint

Coal Ash
Coal
Carbon Monoxide
Fly ash
fly ash
carbon sequestration
Seawater
coal
Deionized water
Flow rate
Carbonation
seawater
Slurries
Ponds
Coal ash
Minerals
evaluation
reactor
Water
ash

Keywords

  • Aqueous mineral carbonation
  • CO
  • Coal fly ash
  • Flow-through column reactor
  • Sequestration

ASJC Scopus subject areas

  • Health, Toxicology and Mutagenesis
  • Pollution
  • Waste Management and Disposal
  • Environmental Chemistry
  • Environmental Engineering

Cite this

Evaluation of the CO 2 sequestration capacity for coal fly ash using a flow-through column reactor under ambient conditions. / Jo, Ho Young; Ahn, Joon Hoon; Jo, Hwanju.

In: Journal of Hazardous Materials, Vol. 241-242, 30.11.2012, p. 127-136.

Research output: Contribution to journalArticle

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